Aircraft covering and method of making same



Feb 2% 1923. 4

0. J. LAiSY. AIRCRAFT GOVERING AND METHOD OF MAKING SAME.

FILED DEC-18,1919.

Patented Feb. 20 1923.

UNITED STATES PATENT OFFICE.

OSCAR J'. LAISY, OF CLEVELAND, OHIO.

AIRCRAFT COVERING AND METHOD or MAKING SAME.

lugs and Methods ofMaking-Same, of which the followingis a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to an improved laminated fabric for'air craft, suitable for use in either the heavier than air or the lighter than airclass; and it pertains as.

well to the process of manufacturing said fabric. j The objects are-to produce a very tough, durable, thoroughly leak-proof and, inexpensive fabric that will withstand the elements to which it is subjected in use; to

produce the same in continuous tubes or sheets large enough to constitute a complete gas bag, or a covering for an air craft unit; and to provide a process of manufacturing the same in a particularly convenient and expeditious manner.

These general objectsaand others which will appear as this description proceeds, are.

ric, and through the use of the process and appara same, illustrated in the attained in the. laminated fab tus for making the drawings accompanying and forming a part i hereof and wherein Fig. 1 represents a sheetofmy improved fabric; and Fig. 2 is a perspective view of a fragment there- Y of considerably magnified.

The improved fabric is made upof a layer of waxed or paraffin paper, preferably such as can be obtained upon the market in rolls of suitable widths, and a layer of gauzeor thin cloth, such as cheese cloth, the two layers being stuck together by the use of a suitable varnish, preferably a linseed oil varnish because of its superior elasticity. It naturally follows from the nature of thegauze-or cloth that in the applying of it to the varnished surface of the paper the same becomes thoroughly filled or impregnated with the varnish; and a coating of varnish is applied to the outer surface of the cloth.

I have illustrated this construction on an enlarged scale in Fig. 2 where A indicates the waxed or paraflin paper; B thecoating of varnish applied thereto; C the layer of cloth; and D i the sheet ofv fabric As shown in Fig.

rated surface the outer coating of varnish.

l Application filed December 18, 1919. Serial R0. 345,689.

In the present illustration I have shown as made up of several widths of strips over apping slightly the edges ofthe intermediate ones; and the cloth is shown as '1n s'trips of a corresponding width and likewlse arranged with the joints between adjacent strips of cloth broken,.so to speak,-

with the joints between the-strips of paper. 1 I start with a half width of cloth so the strips of cloth will fall at about the center of the strips of paper, although it will be understood that I do not regard this as of importance any more than joints of the cloth should be staggered or offset with respectto those of the paper. In use itis intended that the waxed or parafiin paper be disposed on the inner side of the gas bag or the inner side of the airplane element on which the fabric is used. a This places the cloth on the outer side where it is better able to withstand any snags than the paper would be, especially protected as it is by the heavy coating of varnish. The paper is thoroughly impervious to gas or air, and is utilized for that reason, while the cloth imparts to the fabric the required strength.

In the process of making the fabric, I first coat the paper (preferably each strip individually from edge to edge) with varnish, and I do the same with the cloth, and then I lay the cloth upon the paperas in accordance with the arrangement above explained supplying sufficient varnish to the cloth to leave an ample coating thereon. I then subject the fabricated structure to heat which has a tendency to practically amalgamate the various elements into a homogeneous mass, elements 'whereof are practically inseparable whendry. In carrying out this process I prefer to support the fabric on a perfowith the paper next tosaid surface andforce heated air through the perforations of the supporting surface. The air passing through the perforations and against the paper has the tendency of preventing the paper from adhering to the surface if the wax or parafiin should become at all softened through the efi'ects of the heat and byapplying the heated air to the paper side of the structure, it is aper, the edges of the alternate that the joints between.

the individual parts orbubbles or air pockets in the varnish or between the paper and the cloth.

Having thus described 'my what I claim is 1. A laminated fabric comprising layers of relatively thin waxed "paper and gauze impregnated with a varnish to form a homogeneous mass.

2. A laminated fabric comprising layers of relatively thin waxed paper and gauze impregnated with a linseed oil varnish to form a homogeneous mass.

3. The process of forming a laminated fabric which contains the steps of coating a plurality of strips of waxed paper with a varnish. overlapping the edges of said paper to form an enlarged sheet, coating a invention,

signature.

OSCAR 'J. LAISY.

the edges of said 'gauze to form sheet, superimposing one of said ofstrips ofgauze with a varnish, i 

